CN201687724U

CN201687724U - Spiral flow type slurry pump

Info

Publication number: CN201687724U
Application number: CN2010201564456U
Authority: CN
Inventors: 李正川; 王炳波; 姜爱花; 肖曰兴; 隋金敏
Original assignee: PUMP INDUSTRY BRANCH OF YANTAI HENGBANG GROUP Co Ltd
Current assignee: PUMP INDUSTRY BRANCH OF YANTAI HENGBANG GROUP Co Ltd
Priority date: 2010-04-09
Filing date: 2010-04-09
Publication date: 2010-12-29
Anticipated expiration: 2020-04-09

Abstract

The utility model provides a spiral flow type slurry pump, which consists of a pump body, a back protecting plate, a pump cover and a main shaft, wherein the back protecting plate and the pump cover are arranged on the pump body, the main shaft is connected with a motor, the other end of the main shaft is provided with an impeller, the impeller is positioned at the back end of a pump cavity in the pump body, and forms a gap with the back protecting plate, a blade and a sub blade are respectively arranged on the impeller, and the gap between the impeller and the back protecting plate equals to the distance from the outer end of the blade to the back protecting plate, and is 1mm. The utility model installs the impeller in the pump cavity arranged at the back side of a pumping chamber of the pump body, run-through flows and circular flows are formed in a bladeless cavity in front of the impeller when the impeller rotates, the run-through flows enter a pump chamber through a flow passage between the blades of the impeller and flow out, the circular flows circulate in the bladeless cavity, because the middle part of the circular flows is a low-pressure region, solid particles falling into the region can flow rate through being driven by spiral flows, and most solid substances directly flow out from the bladeless cavity without passing through the impeller. Thereby, the diameter of passed medium particles can be enlarged in an allowable range.

Description

Rotary flow type slag stock pump

Technical field

The utility model relates to mechanical field, relates in particular to a kind of rotary flow type slag stock pump.

Background technique

Existing slag stock pump is generally the traditional type structure, promptly contain of the turning effort of the medium of particle by impeller, through impeller channel medium is discharged, because impeller channel has certain spatial constraints, so the media particle diameter that passes through must be limited in certain scope, (being that particle diameter is less than the impeller channel space) must increase specifications and models if satisfy the medium operating mode of the same terms, not only improved cost of production but also wasted resource.

Summary of the invention

The utility model provides a kind of rotary flow type slag stock pump, has solved traditional slag stock pump to discharging the shortcoming that medium has double range to limit.

The technical solution of the utility model is achieved in that rotary flow type slag stock pump, by the pump housing be installed in the pump housing on back backplate, pump cover and the main shaft that links to each other with motor constitute, the other end of main shaft is equipped with impeller, and impeller is positioned at the rear end of pump housing pump chamber, and gapped between the backplate of back;

Be respectively equipped with blade and back blades on the impeller;

Described impeller and the back gap between the backplate is that backplate is 1mm behind the outer end distance of blade.

The beneficial effects of the utility model are: the utility model is that impeller is installed in the pump chamber of pump housing pumping chamber back, in the on-bladed chamber of impeller front, form during the impeller rotation and connect stream, circular flow, perforation stream enters in the pump chamber by runner between impeller blade and flows out, circular flow then circulates in no phyllocyst, because the circular flow middle part is a low pressure area, solid particle is fallen into this district and is flowed out under the drive of eddy flow, thereby most of solid matter directly from no phyllocyst outflow, therefore can strengthen the media particle diameter that passes through without impeller in allowed limits.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Part explanation: 1, pump cover, 2, the back backplate, 3, impeller, 4, the pump housing, 5, blade, 6, back blades, 7, main shaft, 8, pump chamber.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described: rotary flow type slag stock pump, by the pump housing 4 be installed in the pump housing 4 on back backplate 2, pump cover 1 and the main shaft 7 that links to each other with motor constitute, the other end of main shaft 7 is equipped with impeller 3, impeller 3 is positioned at the rear end of pump housing pump chamber 8, and it is gapped between the back backplate 2, be that backplate 2 is 1mm behind the outer end distance of blade 5, be respectively equipped with blade 5 and back blades 6 on the impeller 3.

Leaf 3 is installed in the pump chamber 8 of pump housing pumping chamber back, in the on-bladed chamber of impeller 3 fronts, form during impeller 3 rotations and connect stream, circular flow, perforation stream enters in the pump chamber by runner between impeller blade and flows out, circular flow then circulates in no phyllocyst, because the circular flow middle part is a low pressure area, solid particle is fallen into this district and is flowed out under the drive of eddy flow, thereby most of solid matter directly from no phyllocyst outflow, can be discharged larger-diameter media particle without impeller.

Claims

1. rotary flow type slag stock pump, by the pump housing (4) be installed in the pump housing (4) on back backplate (2), pump cover (1) and main shaft (7) formation that links to each other with motor, the other end of main shaft (7) is equipped with impeller (3), it is characterized in that impeller (3) is positioned at the rear end of the pump housing (4) pump chamber (8), and gapped between the back backplate (2).

2. rotary flow type slag stock pump according to claim 1 is characterized in that being respectively equipped with on the impeller (3) blade (5) and back blades (6).

3. rotary flow type slag stock pump according to claim 1 and 2 is characterized in that the gap between described impeller (3) and the back backplate (2), and promptly the distance of backplate (2) is 1mm behind the outer end distance of blade (5).